<template>
<div>
  <div class='search'>
      <input class='search-input' type='text' placeholder='请输入城市名' v-model="keyword">
  </div>
  <div  class="search-content" ref='search' v-show='keyword'>
      <ul>
         <router-link to='/'>
        <li
          v-for="item of list"
          :key="item.id"
          class="search-item border-bottom"
          @click='handleClick(item.name)'
        >
          {{item.name}}
        </li>
        </router-link>
        <li class="search-item border-bottom" v-show="hasNoData">
          没有找到匹配数据
        </li>
      </ul>
    </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
        name: 'CitySearch',
        props:{
                cities:Object
        },
        methods:{
            handleClick:function(city){
                this.$store.commit('changecity',city)
            }
        },
        data:function(){
          return {
            keyword:'',
            list:[]
          }
        },
        watch: {
    keyword () {
      if (!this.keyword) {
        this.list = []
        return
      }
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }
  },
        computed:{
            hasNoData:function(){
               return !this.list.length
            }
        },
        mounted:function(){
    this.scroll = new Bscroll(this.$refs.search)
  }
}
  </script>
  
<style lang='stylus' scoped>
.search
    height :.72rem
    background :#00bcd4
    padding: 0 .1rem
    .search-input
      box-sizing: border-box
      width: 100%
      height: .62rem
      padding: 0 .1rem
      line-height: .62rem
      text-align: center
      border-radius: .06rem
      color: #666
.search-content
    z-index: 1
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    background: #eee
    .search-item
      line-height: .62rem
      padding-left: .2rem
      background: #fff
      color: #666
</style>